Roller copying-press.



No. 705,352: Patented iuly 22, I902.

' D. E. HUNTER.

ROLLER COPYING PRESS.

(Application filed. Oct. 8, 1901.)

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(Application filed Oct. 8, 1901.)

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No. 705,352. X Patented July 22, I902.

D. E. HUNTER.

ROLLER COPYING PRESS.

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D, E. HUNTER.

ROLLER COPYING PRESS.

' (Application filed Oct. 8, 1901.)

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THE Nonms PETERS co. PHOTQLITHQ. WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

DAVID E. HUNTER, OF CAMBRIDGE, MASSACHUSETTS, ASSIGNOR TO LIBRARY BUREAU, OF BOSTON, MASSACHUSETTS, A CORPORA- TION OF MASSACHUSETTS.

ROLLER COPYING-PRESS.

SPECIFICATION forming part of Letters Patent No. 705,352, dated July22, 1902.

Application filed October 8, 1901. Serial No. 77,953. (No model.)

To aZZ whom, it may concern:

Be it known that LDAVID E.HUNTER, a citizen of the United States, and a resident of Cambridge, in the county of Middlesex and State of Massachusetts, have invented new and useful Improvements in Roller Copying- Presses, of which the followingis a specification.

My invention relates to roller copyingroller copying-press from whichthe side of the stand or cabinet is removed to afford a View of the interior and in which the parts inside the frame are shown in dotted lines. Fig. 2 is a vertical longitudinal section of a copying-press taken along the line 2 2 of Fig. 3. Fig. 3 is a plan view of a copying-press. Fig. 4, a vertical cross-section taken along the line i 4 of Fig 3, and Figs. 5 and 6 are details of the water-pan-shifting mechanism. Fig. 7 is a side elevation of the upper part of the press, partly broken away to disclose the interior.

A is the cabinet which forms the base of my improvedpress, and B is the frame of the press, mounted upon the cabinet A.

My improved press is constructed and adapted to use a long roll or band of press copy-paper p, which is rolled upon the pa perroll P in the manner usual with roller copying-presses. The copy-paper band 19 is drawn from the roll P to and through a water-pan w, and thence through the rolls R R of which R is the copying-roll, and thence over an idler-roll P to a receiving-roll D, which is mounted in the cabinet. A slot at in the top of the cabinet affords passage for the copypaperband, and a roller aplaced adjacent to the slot a, serves to guide" the paper band when the receiving-rollDis full of paper, as indicated in solid lines at a in Fig. 1 and in dotted lines in Fig. 2. In order to keep the paper band moderately taut, I provide a frictional drag upon the paper-roll, which in the instance here shown consists of a spring-plate F,- adjustably secured to the cross-rod f of ing and copying devices, a new arrangement ofwa,ter-p an and its attendant parts, a new arrangement of a paper-trimming knife, and

improvements in copy-paper-receiving devices.;.-

The paper-moistening mechanism consists ot'the water-pan 10, (see Figs. 1, 2, and 4,) which carries a supply-tank 20 the latter being mounted upon side supports 10 and provided with a water-passage 10 which leads from the supply-tank 10 to the water-pan to. (See Figs. 2, 4, and 7.) The water-pan w is supported upon rockerarms 10 which in turn are mounted on rock-shafts 10 journaled in suitable boxes in the sides of the frame B. On the outside of the frame B cranks 10 10 are secured to the rock-shafts 10 and an operating-rod w is articulately joined to the cranks w. The rod to is provided with a convenient handle to and a retaining-notch to; which when the rod is drawn to the left, Fig. 1,- slips over the spring-pin 10 and holds the water-pan-sustaining mechanism in position as long as desired. The cranks w and rocker-arms w are parallel to each other, respectively, so that the water-pan w is maintained in a horizontal position at all times. When the water-pan w is in its lower position, as indicated in dotted lines in Fig. 1, it rests upon brackets m, secured to or integral with the sides of the frame B, and in its vertical movements the water-panic is guided by the guides m likewise secured to or integral with the sides'of' the framefB. The. tank 20 is likewise guided by guidles mf, secured to or integral with the sides of the frame B. In

order to accommodate the lifting mechanism to the rectilinear vertical movement of the water-pan w, the rocker-arms 10 (see Figs. 5

and G) are dovetailed at m to the platform m upon which the water-pan w is supported. Thus as the water-pan-shifting mechanism is operated the slippers m slide along the bottom of the platform m The supply-tank w is normally closed, being provided with a valved opening, whereby it may be filled and automatically replenishes water in the pan w. Whenever by evaporation or absorption on the paper-roll the supply in the pan 10 becomes depleted and the lower end of the waterpassage 10 is opened to the air, the water in the supply-tank 10 automaticallysupplies the deficiency until by the rise of the water-surface in the pan the passage 41 again becomes sealed. I have provided also an arrangement whereby the supply-tank 20 is controlled by an automatic valve, which performs its office of closing the water-passage w whenever the water-pan is lowered out of working position or is removed from the press for any purpose. A fiat valve w, adapted to close the mouth of the water-passage 10 is secured to or integral with the sliding stem of, which at its upper end is provided with the arm 7: and at a suitable point with the stub t). (See Fig. '7.) A spring '0 acting on the arm '0 constantly tends to close the valve '12. Upon a cross-rod or other stationary part of the press-frame there is adjustably secured the stop n, which coacts with the stub 11'. When the water-pan w and the parts supported thereby are lowered to inactive position, as above described, the spring o asserts itself and closes the valve 1: thus preventing the escape of water from the tank *2. \Vhen the pan to is raised, the stub o strikes against the stop 1), and thereby opens the valve N. If it be desired to remove the tank or from the press, the stop o is turned out of the way, the spring 0 closes the valve r, and the tank 10 may be lifted without fear of spilling water. To fill the tank 20 invert it, raise the valve n, and pour water into the passage to.

In order to guide the copy-paper band 19 through the water-pan w, I provide the guide G, which consists ofa U-shaped resilient wire, whereof the bottom of the U is a straight rod, which extends nearly across the width of the water-pan. The vertical arms of the U-shaped guide G are sprung between supports g in such manner that the spring-pressure exerted by the arms of the guide G sustains the guide in any desired position. A red f secured to the sides of the frame B and extending across the interior of the same, serves as a back-stop for the guide G and holds it in position against frictional drag of the paperroll P.

The rolls R R are rubber rollers of ordinary construction, mounted in boxes at r 1 placed in vertical guides, which extend to the top of the standards 0, and the pressure-roll R is mounted in sliding boxes at r, supported by springs 1' so as to respond to the action of the pressure-regulator. The pressure-regulator consists of the handle at, Fig. 1, which is secured to and operates the eccentric roller d. This is mounted in the box 0, which is adjustably secured in standards 0 by setscrews 0 which pass through the cover-plate 0 When it is desired to depress the pressure-roll R, the handle (1 is moved to its solid-line position, as shown in Fig. 1, and when it is desired to remove the pressure from the roll R the handle (1 is shifted to its dotted-line position (Z In preparing my roller copying-press for operation the water-pan w and its supply-tank 10 are filled with water, the letter-plate y is removed, and the water-pan placed upon its platform 072*, the water-pan-shifting mechanism being thrown forward to the position shown in Fig. 1. The tank 10 is placed in position upon the upright wings w, the stop 1; moved into position, as shown in Fig. 1. The paper-band p is then drawn oif from the roller P, passed under the guide G, which is sprung into the desired position, thence through the rolls R R under the pressure-roll R, over the idler-roll P, and thence to the receiving-rollD. Thentheoperating-handlew of the water-pan-iifting mechanism is pulled to the left as viewed in Fig. 1, and the water-pan is lifted to the position shown in Fig. 2, raising the surface of the water above the point to which the guide G depresses the paper band 19. The plate 11 being replaced, letters to be copied are taken from the shelf S and in the usual manner passed through the machine, from which they emerge and fall upon the shelf S. The copy-paper roll then passes to the receiving-roll D, where it is stored. In order to prevent offsetting of copy from one portion of the paper-roll to another as it is wound upon the receiving-roll,I provide two devices, which may be used separately or together. These are a band of blotting material, such as soft cloth, of substantially the same width as the paper-roll, which is wound upon the blotter-roll D and drawn from the roll D to the roll D as the press is operated. hen the end of the paper band 1) is drawn through the slot a to the rollD the blotter band 4 K is brought forward and laid on the roll D under the paper band p and there secured, so that as the paper is wound on the receivingroll there is always an absorbent layer between two successivelayers of the paper. The other contrivance for the prevention of offsetting consists in the heater H, which is preferably a small electric heater of any suitable construction, having electrical connections 1), controlled by the switchb Thisis placedin proximity to the receiving-roll D, and as the paper passes onto the roll the heater dries it sufficiently to prevent the ink from offsetting. The two rolls D D are driven by belts, of which the tension is so adjusted that they slip, and thus compensate for changing differentials due to the accumulation and diminution of paper or cloth on any one of the respective rolls. The belt T is driven from the pulley t, which is on the shaft of the copy-roll R This roll is the driving-roll of the machine and is provided with an operating-crank L, Figs. 3 and 4. The belt T drives the roll D from the roll D.

The trimming-knife and its mounting are shown at Nin the several figures. The knife n is ablade, preferably curved,mounted upon a handle at and pivoted for vertical motion at 01 upon a knife-frame 01. which is pivoted for horizontal motion upon the vertical pivot 71 at the side of the frame B; (See Fig. 3.) A stop n upon the frame n serves to retain the knife in proper position with relation to the frame when not in use, and the spring 92 is coiled upon the shaft Win such manner as to hold the edge of the knife n in close shearing contact with the frame 71 When the trimming-knife is to be used, it is swung across the letter-plate y from the position shown in Fig. 2 to that shown in Fig. l, where itis conveniently located for its work. A stop a, located on the side of the frame B opposite to the knife-pivot 'n, engages the knife-frame n and holds it and the knife in proper position for trimming letter-sheets as they are placed on the press. When the knife is not in use, it is swung to the position shown in Fig. 2 and is entirely out of the way.

What I claim, and desire to secure by Letters Patent, is-- 1. In a copying-press, the combination with a paper-roll and copying-rolls, of a water-pan, a closed tank supported over the pan, and a water-supply pipe depending from the tank into the pan.

2. In acopying-press, the combination with a paper-roll and copying-rolls, of a water-pan, a movable support therefor, whereby the pan may be vertically shifted, a closed tank, supported on and over the pan and movable therewith,and a Water-supply pipe depending from the tank into the pan.

3. In a copying-press, the combination with a paper-roll and copying-rolls, of a water-pan, a supporting-frame therefor, consisting of rocker-arms whereon the tank rests, rockshafts for the said arms, parallel cranks and an operating-rod, whereby the pan may be vertically shifted.

4. In a copying-press, the combination with a paper-roll and copying-rolls, of a water-pan, a supporting -frame therefor consisting of, rocker-arms, slide connections between the rocker-arms and the pan, a bracket whereon the pan rests When lowered, vertical guides for the pan, and connections whereby the rocker-arms may be actuated to raise or lower the pan in its guides.

5. In acopying-press, the combination with a paper-roll and copying-rolls, of a water-pan, and an immersing-guide consisting of a rod providedwith resilient arms, and supports for the said arms whereby the guide is held by the spring-pressure of the said arms.

paper-roll and copying-rolls, of a water-pan and an immersing-guide consisting of a U- shaped resilient wire with a straight lower portion, and supports for the arms of the U whereby the guide is held by the spring-pressure of the said arms.

7. In a copying-press, the combination with a paper-roll and copying-rolls, of a water-pan, an immersing-guide consisting of a rodprovided with resilient arms and supports for the said arms whereby the guide is held by the spring-pressure of the said arms, and a backstop for the guide.

8. The combination in a copying-press, of a water-pan, supports thereon for a supplytank, the supply-tank, a water-passage, open at the bottom extending downward from the supply-tank to a point within the water-pan.

9. The combination in a copying-press, of a water-pan, supports thereon for a supplytank, the supply-tank, a water-passage, open at the bottom, extending downward from the supply-tank to a point within the water-pan and a valve, secured to the supply-tank, nor mally spring-pressed to a position of closure against the'water-passage opening, substantially as described.

10. The combination in a copying-press, of a water-pan, a supply-tank supported thereby, a water-passage from the tank to the pan, a vertically-movable support for the pan, means for moving said support vertically, a valve for the water-passage, normally springpressed to a position of closure, and means whereby the said valve is opened against its spring-pressure upon lifting the water-pan.

11. The combination in a copying-press, of a paper-roll, copying-rolls, a water-pan, an immersing guide for the paper suspended over the water-pan, and means for vertically changing the relative positions of the waterpan and immersing-guide whereby the pan and paper may be made to coact, or not, at will.

12. The combination in a copying-press, of a paper-roll, copying-rolls, a water-pan, a supply-tank carried thereby, a water-passage from the tank to the pan, a valve, controlling the water passage, and normally springpressed toward a position of closure, an immersing-guide, means for vertically changing the relative positions of the water-pan and immersing-guide, and means, associated with the said relative vertical movement, whereby the water-passage valve is opened-as the pan and immersing-guide approach each other,

substantially as described.

Signed by meat Boston, Massachusetts, this 5th day of October, 1901.

DAVID E. HUNTER. Witnesses:

ROBERT OUsHMAN,

FRANK S. HARTNETT. 

